01Your table
Any column order; extra columns ignored. Include taxon and/or accession columns to fit many lots at once — rows sharing the same taxon + accession become one lot.
02How we read your columns
03Re-collection threshold — and what it's relative to
70%
P70 = time until predicted viability falls to 70% of all seeds. A lot whose baseline is already below 70% has no P70 on this definition — it's flagged, not blanked.
04Fits
4 lots across 3 taxa · 4 fits OK · 1 with P70 undefined at this threshold (reasons inline)
| Taxon | Accession | Pts | Seeds | σ (d/probit) | Initial viab. | P50 | P70 |
|---|---|---|---|---|---|---|---|
| Abutilon menziesii | ABU-001 | 3 | 150 | 535.1 | 95% | 2.4 yr | 1.6 yr |
| Abutilon menziesii | ABU-002 | 3 | 150 | 873.5 | 60% | 225 d | undefined ↓ |
| ↳ this lot's fitted initial viability is 60% — already at or below the 70% threshold, so P70 (absolute) never occurs. Lower the threshold or use "% of initial". | |||||||
| Hibiscus brackenridgei | HIB-014 | 3 | 150 | 440.8 | 88% | 1.4 yr | 293 d |
| Santalum freycinetianum | SAN-007 | 3 | 120 | 877.9 | 94% | 3.8 yr | 2.6 yr |
click a row for its decay curve
PROVENANCE. Every lot above is an independent maximum-likelihood probit fit to its own counts — the same validated code path as the calculator. Nothing is pooled across accessions or taxa; a shared taxon name shares nothing statistically.